EXPLAIN SHOW FUNCTIONS;
SHOW FUNCTIONS;

EXPLAIN SHOW FUNCTIONS '^c.*';
SHOW FUNCTIONS '^c.*';

SHOW FUNCTIONS '.*e$';

SHOW FUNCTIONS 'log.*';

SHOW FUNCTIONS '.*date.*';

SHOW FUNCTIONS '***';

EXPLAIN SHOW FUNCTIONS LIKE 'When';
SHOW FUNCTIONS LIKE 'When';

SHOW FUNCTIONS LIKE 'max|min';

SHOW FUNCTIONS LIKE 'xpath*|m*';

SHOW FUNCTIONS LIKE 'nomatch';

SHOW FUNCTIONS LIKE "log";

SHOW FUNCTIONS LIKE 'log';

SHOW FUNCTIONS LIKE `log`;

SHOW FUNCTIONS LIKE 'log*';

SHOW FUNCTIONS LIKE "log*";

SHOW FUNCTIONS LIKE `log*`;
